It turns out this isn't the first married man Kasey has been intermingled with and she has a slew of skeletons in her closet that are just dying to get out!

After getting a degree in Kinesiology from LSU and attempted modeling and acting, Kasey moved to NYC where she eventually found herself working as a personal trainer at the swanky gym La Palestra. After a heated affair with her boss – she was accused of being obsessed with him and checked into a mental hospital. Mario certainly does like the crazy ones!

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Sit down – this is juicy!

Page Six was the first to report that Kasey filed a lawsuit against La Palestra and her former boss (and gym manager) George Peters. Kasey alleged the two had a steamy workplace affair and he only hired her because he wanted to sleep with her.

Kasey, who upon getting hired in 2012 did not have a valid personal training license, was required to "trail" her boss for experience according to court documents RadarOnline unearthed. George then suspended Kasey's pay. Reason not explained.

Since the guy was obviously an unreasonable douche who was using her, Kasey and George quickly entered into a "consensual sexual relationship." Did we mention George-e-o is el married-o. Boy, Kasey – patterns, much?

Peters “would ask [Dexter] to have sex with him on various pieces of equipment and training tables at La Palestra,” Kasey's complaint reveals. “Even though the sexual relationship was consensual, [Dexter] still hesitated and/or protested having sex on the equipment,” but her boss “would convince [her] to have sex on the equipment because he was the manager and could make [Dexter] a great trainer.”

Kasey also intimates that she felt pressured to comply or else her job would suffer. "Her ability to become a regular trainer at La Palestra in the future was contingent on her submission, or refusal, to have sex on certain pieces of gym equipment," the complaint states.

Adding further layers of contradiction, Kasey's suit alleges that the relationship “became very intense” Kasey she “started to become increasingly infatuated/in-love” with Peters. Kasey further confesses that she "developed an unhealthy obsession with him." Despite the confusing feelings, Kasey “continued to engage in the sexual relationship.” Oh my…

In 2013, George began to have doubts and worried the affair would tarnish both his personal and professional life. Oh, ya' think?! So he called the whole thing off. George “realized that this escalating affair could negatively affect his marriage and abruptly ended the relationship.”

Annnd unfortunately Kasey went off the deep end as a result! “The end of the relationship and interactions [with Peters at work] continued to affect [Dexter emotionally and psychologically,” the complaint explains, “and as a result, in or around July 2012, [Dexter] was rushed to the Lenox Hill Hospital emergency room for severe panic attacks.”

Kasey asked other gym bosses to help her stay away from Peters, but he wouldn't leave her alone! Her suit alleges that Peters “continued to repeatedly call [Dexter] and leave threatening and nasty messages, such as, ‘I wish I had never met you’ and ‘I regret the day that I ever hired you.’” He also told her to “Leave the company — resign already,” and “Become a stripper, that’s what you’re good at.”

“But Defendant Peters would then also leave [Dexter] messages saying that his wife was away for the weekend and that he missed her." Gosh – this guy seems like a real piece of work!

As a result of the emotional turmoil Kasey “voluntarily checked herself into St. Luke’s Psychiatric Ward,” in September 2012 where she stayed for 10 days.

As part of her treatment doctors ordered her to have no contact with Peters, but the "Plantiff simply could not resist" and Kasey persisted in contacted Peters. After all the drama, Kasey was fired from La Palestra in November of 2012.

A month later Kasey made the decision to file a sexual harassment lawsuit. Peters and La Palestra insist the lawsuit is "without merit" and maintain that the relationship was strictly consensual with Peters guilty of no harassment or other wrong-doing. The case is still on-going and the two former lovebirds are set to go before a mediator on February 11.

Meanwhile, Kasey has been hopping around The Hamptons with Mario. I can't wait to hear what her shrinks make of her latest indiscretion!

More photos of Kasey are below. All Photos of Kasey are credited to her personal Facebook page.

In other Singer divorce news, according to TMZ Ramona's divorce filing claimed the marriage had been "irretrievably broken" for at least 6 months.

As a result of Mario's fooling around Ramona is requesting she get BOTH the couple's houses in the settlement. Yep, she wants their NYC apartment and the Southampton home where Mario's adultery took place.

[Photo Credit: Twitter]

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